localhost ~ # cat /var/log/Xorg.0.log|grep -i glx
(II) LoadModule: "glx"
(II) Loading /usr/lib/xorg/modules/extensions//libglx.so
(II) Module glx: vendor="NVIDIA Corporation"
(II) Loading extension GLX
(WW) NV(0): Option "AddARGBGLXVisuals" is not used
(EE) Failed to initialize GLX extension (Compatible NVIDIA X driver not found)
localhost ~ #